this is "nightline." >> tonight, massacre in france. a driver intentionally plowing his truck through a crowded square for over a mile, killing at least 80 people celebrating the french holiday. who's responsible for this latest apparent terror attack? the people and the president. an abc town hall on race and policing. >> the answer is yes, i have been pulled over. >> tonight the traffic stop examined. >> the policeman wants to go home safely, we want to get home safely. >> split-second decisions making routine traffic stops deadly. for the public and officers. we're on the streets. 30 years after

who you gonna call this weekend? "ghostbusters" back with a twist. we'll talk to the stars. >> "nightline" will be right back.

good evening. thank you for joining us. breaking news tonight. at least 80 people dead and

dozens injured, including children in a horrific attack in france. one witness calling the scene in the resort town of nice apocalyptic. this time the weapon of choice, a truck. the driver plows through crowds after a bastille day celebration. horror in the french resort town of nice. >> it was sheer terror. >> reporter: a truck turned lethal weapon plowing through a crowded promenade, killing at least 80 people, including children, and wounding more than 65, according to french authorities. >> i was looking for a place to hide, i was running. >> i did see it hit a few people. and there were a few people lying on the ground. >> reporter: all across france, fireworks lighting up the skies to celebrate france's national holiday, bastille day. and in nice -- >> people were just enjoying the music, beautiful ambiance. it was amazing. people were having fun, so many people were there. >> there must have been thousands

this show. >> reporter: just after midnight in nice, screams of terror and panic. >> we saw some running. people ducking, looking for doorways, places to hide. the sound of shooting in the air. so we go into a nearby restaurant and hide in an alleyway we could get to from the back of it. >> reporter: nice is the gateway to the french riviera. ritesy tourist destination for americans and europeans. sam jones was visiting from the uk. >> we saw thousands of people running towards us. >> reporter: he was exiting a waterfront hotel when he says he first noticed something was wrong. >> they were all screaming. everyone was running in every direction. seconds later, this giant white van came bolting down this road. it was just taking out people left, right and center. we began to run because everyone was frantically running. we had no

happening. >> reporter: another eyewitness, gym gasol, describing the chaos. >> i heard loud noises. and people started screaming and shots being fired up in the air. and everyone started running in different parts. >> reporter: authorities say the truck was loaded with guns and grenades. the driver speeding through crowds for more than a mile, shooting a firearm out the window. >> when we were running, apart from all the screaming that we did hear shots fired which i assumed to be the police. >> reporter: the driver was shot by police after an exchange of gunfire. the bullet-riddled wind shield evidence of the carnage. a trail of bodies left in its path. this video shared via social media providing a look at the desperate moments following the attack. authorities say they are not aware of any accomplices and are investigating in as an act o

terror. french president francois hollande speaking tonight saying, france is deeply affected by this new tragedy and horrified by what has just occurred. this monstrous act which consists of using a truck in order to deliberately kill dozens of people who were simply celebrating 14th of july. france has been a target before. just this past november, 130 people were killed as islamic militant suicide bombers and gunmen opened fire on the streets of paris inside a concert hall in france's national stadium. the country was put on a nationwide state of emergency. it was to be lifted in a matter of weeks. but has now been extended three more months, leaving france as a nation on edge. we'll continue to bring you the very latest on this story thro

abcnews.com. first, the president and the people. coming together in a landmark town hall with our david muir. >> mr. president, thank you for joining us. >> to ask candid and challenging questions about race and policing. >> i ask for your help to unite all the races of this world. >> families of loved ones killed by police and families of police officers who never came home from work, together in the same room. >> i would just like to know how you're supposed to feel every day when your son puts on a police uniform and he's an honest police officer, what's he supposed to do to protect himself? >> there are not excuses for the kinds of violent activities that we see in response to anything. >> at the heart of the discussion, protecting both officers and citizens, especially in high-risk situations like traffic stops. >> my question to you, mr.

president, is, have you ever been pulled over, and what was your experience like as a driver? >> i the answer is, yes, i have been pulled over. and i will say that -- the overwhelming majority of the time i deserved to be pulled over because i was going too fast. there have been a couple of times in my life where that was not the case. >> ahead, we'll hear why he made this controversial viral video about what to do when you're being pulled over. >> you have to have your i.d. pulled out before the cop gets there. >> and how those routine traffic stops can turn fatal. the split-second decisions that make the difference when we come back. >> put your hands up! and clearer skin. this is my body of proof that i can fight psoriatic arthritis

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police tell us that traffic stops can be one of the most dangerous parts of their job. the shooting death of philando castille during a stop shown on facebook live last week the latest example of the danger on both sides. tonight a closer look at this high-stakes encounter in an ongoing series, "america in black and white." >> lots of people -- usually have more firepower than the police. >> reporter: richmond, california. a small city with a big gun problem. the tension between black and blue is palpable. >> generation of jen ration, the mantra you can't trust the police. >> reporter: a reality that makes any encounter potentially da

patrol -- >> what did i do? >> reporter: a routine traffic stop turns into an armed standoff. >> put your hands up! hands up! >> it's a firearm. >> reporter: the driver has a gun out in plain view. >> hands up! >> don't move, if you move you're going to get shot, you understand? >> reporter: the driver finally puts his hands on the steering wheel, away from the gun. >> keep your hand right there. >> reporter: the two officers are outnumbered by the four men in the car. and no telling if the passengers are armed. >> keep your hands on the headre headrests, hands on the head rests. >> reporter: waiting for backup, officer ben tarahill makes a move, holstering his gun so he can disarm the driver. >> i'm not doing anything! >> step out. hands behind your back. your other hand behind your back. >> reporter: turns out there was a second gun in the back seat. with both drivers and cops packing heat, four loaded guns, three tense minutes.

finite amount of time but infinite ways this could have turned deadly. traffic stops are always a dangerous intersection of unknowns. but with our country at a crossroads, grappling with issues of race and justice. videos like these going viral. the circumstances disturbingly similar. >> please don't tell me this, lord, please jesus, don't tell me he's gone. >> reporter: a police car, a camera, a person of color. the traffic stop has become a flash point. >> they are here to sals nate us! >> yes, they are! >> they are here to kill us! >> murderers! >> because we are black! >> reporter: diamond reynolds was in the car when her boyfriend philando castille was shot by police last week, his tragic death live streamed on facebook, began as a traffic stop. black drivers are disproportionately pulled over for minor offenses according to bureau of justice statistics. many who were watching commenting on

terrifying trauma. >> keep your hands where they are! >> i will, i'll keep my hands where they are. >> it's really unfortunate that it was the citizen who worked to de-escalate the situation and not the officer who we believed are being trained to de-escalate those situations. >> she was the coolest kid in that whole situation. that was unbelievable. unbelievable. couldn't imagine. >> as the cop is approaching you have to realize he doesn't know what's come -- >> reporter: inspired by reynolds' calm, kafe anderson, a biracial country music singer, made this video showing exactly what drivers can do to defuse tension at traffic stops and keep everybody, including the police, calm. >> you have to have your i.d. pulled out before the cop gets there. my car is completely turned off, radio down. facing forward, both hands here with fingers out. >> reporter: it's gone viral. >> at the end of the day the policeman wants to go home safely, we want to get home safely.

day, you have to go home. >> reporter: not all the feedback has been positive. >> it says, doesn't this contribute to the blaming the victim? my response was, i hope it doesn't. i pray that it helps defuse the tension between police and drivers when a traffic stop occu. >> reporter: it isn't just drivers in peril. police also face real risk when they pull someone over. just last night, a police officer in georgia was dragged after he approached this car when he noticed the driver was asleep. then there are these disturbing videos documenting routine traffic stops where the police became the victims. in 2013, deputy james boyd pulled over this cadillac in bowie, texas. he didn't know the driver, evan eble, was a convicted felon wanted for two murders in colorado. as deputy boyd approached the car -- four shots fired at close range. he was hit twice. >> all i can remember is blood pouring down my face and landing on my hands. i wasn't able to make it to

i was too weak at that point. >> reporter: the video shows him laying on the side of the road. good samaritans found him and called for help. >> what happened? >> i got shot. >> the third shot, it would have gone one-eighth of an inch down or to either side, i wouldn't be sitting here talking to you. >> reporter: the man who shot him is on the run, chased down by police before crashing into a truck. >> major accident! >> reporter: his car sprayed with a barrage of police bullets. he later died. deputy boyd had a long and painfully recovery. three years later, guess who's back on patrol. >> i went back because it's what i know, it's what i love doing. i love being able to get out there and most people don't like police officers. >> reporter: his wife patricia grateful for every day they have together. >> honestly there's always that feeling on your stomach. you never know if they're going to come back that night. >> we don't have the luxury of

being able to wait and decipher through every single decision. if we sit there and wait, it could cost us our lives. a victim their lives. an innocent civilian their lives. >> reporter: during that traffic stop back in richmond, we watched the officers do exactly that, make many split-second decisions under extreme circumstances. remember, there was a gun within the driver's reach. and at first, he wasn't complying. >> keep your hands up, man! >> hands up! >> reporter: officer terio says he had legal justification to shoot, but chose not to. >> the difference is i've been in the sittion so many times. if he was to reach for the gun a little bit more, that's it, i can't wait any more. training is probably the most key part of why that went down the way it did. >> you can never have too much security -- >> reporter: the small city of richmond until recently had among the highest homicide rates in the country. with so many guns on the streets, off is certificates have to b

>> men and women under your charge have to encounter things like this day to day. what do you think? >> well, i mean, it can be a pretty dangerous job which is, you know, why we place such a high priority on training, on using good tactics, reinforcing good habits. >> reporter: more often than many police departments, more officers here required to go through training like this every few months. the purpose of role play, to put officers in scenarios like traffic stops. >> what's your first name? >> it's orlando. >> reporter: but they have to assess a situation and make split-second decisions that can mean life or death for them or the driver. the protocol? >> well, you know, that's something you can contest in traffic court, but for now -- >> reporter: try to de-escalate the situation using words. >> keep them where i can see them, don't move. >> you identified really quickly that was a phone. what was his demeanor like? >> he was challenging. >> you drew your

>> i looked, peeked in the car to see if there were weapons, i saw a pistol on the center console. >> reporter: they're trained to be transparent with the driver about what they're doing and why. >> do me a favor, reach for that very slowly -- >> reporter: while being vigilant to look for signs of a threat like a gun. and when necessary -- >> keep your hands up! >> reporter: don't hesitate to use their own gun. >> the one area i would want you to think about are some of the communication skills. your orders are very clear, very concise -- >> reporter: words instead of bullets. in traffic stops as well as the country, a needed calm where cooler heads prevail. and next, one of the most-anticipated movies of the summer opens tomorrow. it's a remake of the original "ghostbusters" with a feminine twist. and by taking chantix, i was able to quit in 3 months and that was amazing.

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finally it's the movie many people have been waiting for this summer, "ghostbusters" opens tomorrow. it's a comedy but believe it or not some people aren't finding it funny. still, for action comedy this weekend, who you gonna

>> i will kick the unliving crap out of you! >> reporter: it's an all-woman reboot of "ghostbusters." >> let's go. >> let's go. >> oh, did you want to -- >> story, i'll let you. >> next time. >> reporter: the sweet, sisterly saga, a child-friendly pg-13 rating. >> i kept yelling, let my children see this one! give me one! >> reporter: a comedic actress super troupe. melissa mccarthy, kristin wigg, leslie jones, kate mckinnon. >> what was it like together on the set the first time? >> it was chaos. ladies, ladies, ladies. may less sa, put kate down. >> in my defense she's not bird bones and i carry kate around on my hip. we would do it while paul was trying to do it actual notes. audiences raving about mckinnon as the gearhead. >> she reacts in such a strange, muted way to these outlandish

events. and then i thought, oh, that is -- yeah. >> so you. >> that's me. >> oh, you're bad. >> oh my god. >> you're batty. >> reporter: minus an under the weather kristin wigg. >> we love you, kristin! >> reporter: this cast, unafraid of ghosts or retro ghosts on social media, spooked by the idea of female ghost busters. >> as the mom of two girls i would hate to think there's that much -- just true hatred for women out there. that's an awfully frightening thing. >> reporter: it was screened for the original to turn up in cameos throughout. the director said he was too scared to watch. >> bill murray pulled me aside, said i've been worried about this movie for 30 years, and he loved what we did. >> i feel the movie is in a sense a documentary of some gals at summer camp. and it's been documented and you can all go see it, and should. twice.

>> reporter: for "nightline," i'm chris connelly in los angeles. >> laughter can make for good medicine. the events in france, our troubles at home, reminded us of the words of the late nelson mandela. courage is not the absence of fear, but the triumph over it. thank you for watching abc news. tune into "good morning america" tomorrow. as always we're online at abcnews.com and our "nightline" facebook page. good night, america. [gasp] ah! aah! ray! i'm in here! i forgot deodorant. get out! what is that? out! you have a mustache. out! sorry!

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